Unrestricted Upload Vulnerability in Tsinghua Unigroup Electronic Archives System
CVE-2026-2684

6.9MEDIUM

Key Information:

Vendor

Tsinghua Unigroup

Status
Electronic Archives System
Vendor
CVE Published:
18 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2684?

A vulnerability exists in the Tsinghua Unigroup Electronic Archives System, specifically in an unknown function related to file management within the '/Archive/ErecordManage/uploadFile.html' endpoint. This flaw allows unauthorized users to exploit the system by manipulating the argument 'File', resulting in unrestricted file uploads. The vulnerability can be triggered remotely, potentially leading to significant security risks. The vendor has been made aware of this issue but has not provided any response. Publicly disclosed exploits may already be circulating.

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Affected Version(s)

Electronic Archives System 3.2.210802(62532)

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2684 - Proof of Concept

References

https://vuldb.com/?id.346475
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346475
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https://vuldb.com/?submit.753973
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

lanmeik (VulDB User)
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